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/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
define([
'underscore',
'Magento_Checkout/js/model/quote',
'Magento_Checkout/js/model/payment/method-list',
'Magento_Checkout/js/action/select-payment-method'
], function (_, quote, methodList, selectPaymentMethod) {
'use strict';
/**
* Free method filter
* @param {Object} paymentMethod
* @return {Boolean}
*/
var isFreePaymentMethod = function (paymentMethod) {
return paymentMethod.method === 'free';
},
/**
* Grabs the grand total from quote
* @return {Number}
*/
getGrandTotal = function () {
return quote.totals()['grand_total'];
};
return {
isFreeAvailable: false,
/**
* Populate the list of payment methods
* @param {Array} methods
*/
setPaymentMethods: function (methods) {
var freeMethod,
filteredMethods,
methodIsAvailable,
methodNames;
freeMethod = _.find(methods, isFreePaymentMethod);
this.isFreeAvailable = !!freeMethod;
if (freeMethod && getGrandTotal() <= 0) {
methods.splice(0, methods.length, freeMethod);
selectPaymentMethod(freeMethod);
}
filteredMethods = _.without(methods, freeMethod);
if (filteredMethods.length === 1) {
selectPaymentMethod(filteredMethods[0]);
} else if (quote.paymentMethod()) {
methodIsAvailable = methods.some(function (item) {
return item.method === quote.paymentMethod().method;
});
//Unset selected payment method if not available
if (!methodIsAvailable) {
selectPaymentMethod(null);
}
}
/**
* Overwrite methods with existing methods to preserve ko array references.
* This prevent ko from re-rendering those methods.
*/
methodNames = _.pluck(methods, 'method');
_.map(methodList(), function (existingMethod) {
var existingMethodIndex = methodNames.indexOf(existingMethod.method);
if (existingMethodIndex !== -1) {
methods[existingMethodIndex] = existingMethod;
}
});
methodList(methods);
},
/**
* Get the list of available payment methods.
* @return {Array}
*/
getAvailablePaymentMethods: function () {
var allMethods = methodList().slice(),
grandTotalOverZero = getGrandTotal() > 0;
if (!this.isFreeAvailable) {
return allMethods;
}
if (grandTotalOverZero) {
return _.reject(allMethods, isFreePaymentMethod);
}
return _.filter(allMethods, isFreePaymentMethod);
}
};
});